FATIGUE DAMAGE IN THE LEHIGH CANAL BRIDGE
Strains were measured at several structural steel details of one of the Lehigh Canal Bridges under normal traffic during a pilot study. Since these bridges have several fatigue cracks in the tie plates connecting the floor beams to the outrigger cantilever brackets, the primary focus was on the tie plates and the cause of fatigue cracking. Strain gages were mounted on five tie plates, on a stringer, and on the longitudinal girders. An automatic computer-controlled data acquisition system was used to record the strain range occurrences. In addition, an analog trace recorder was used to determine the live-load strain variations with time.
- Prepared in cooperation with Pennsylvania Dept. of Transportation, Harrisburg.
Lehigh UniversityFritz Engineering Laboratory
Bethlehem, PA United States 18015
Harrisburg, PA United States 17120
- Fisher, J W
- Yen, B T
- Marchica, N V
- Publication Date: 1974-11
- Pagination: 53 p.
- TRT Terms: Construction joints; Cracking; Data collection; Fatigue (Mechanics); Fracture mechanics; Highway bridges; Joints (Engineering); Live loads; Pavement widening; Splice plates; Steel; Steel plates; Streets; Structural analysis; Structural members; Structural steel; Variables; Welds
- Uncontrolled Terms: Crack propagation; Welded joints
- Geographic Terms: Pennsylvania
- Old TRIS Terms: Street widening; Variations
- Subject Areas: Bridges and other structures; Geotechnology; Highways; Materials;
- Accession Number: 00091422
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: FEL-286.1 Intrm Rpt.
- Files: NTIS, TRIS, STATEDOT
- Created Date: Jul 15 1975 12:00AM